Pls solve it......
Reply as early as possible.....
Attachments:
Answers
Answered by
1
Block starts descending with acceleration 2 m/s² , so friction act upward direction as shown in figure.
according to Newton's law of motion,
mgsin30° - fr = ma
fr = mgsin30° - ma
= 10 × 10 × 1/2 - 10 × 2
= 50 - 20
= 30N
hence, kinetic Friction force = 30N
according to Newton's law of motion,
mgsin30° - fr = ma
fr = mgsin30° - ma
= 10 × 10 × 1/2 - 10 × 2
= 50 - 20
= 30N
hence, kinetic Friction force = 30N
Attachments:
tithimaji:
Thank you very much ☺
Similar questions